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Strangest language feature

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Eóin:
Fantastic question (thread?) from over on stack overflow. Plenty of things in there I never knew about. For example:

In JavaScript:
'5' + 3 gives '53'
Whereas
'5' - 3 gives 2-http://stackoverflow.com/questions/1995113/strangest-language-feature
--- End quote ---

From reddit originally

Deozaan:
That was fun to read through.

MilesAhead:
ahk can't be too far behind with this usage:


--- ---If 0 < 1
{
MsgBox, 64, DummyApp Usage, Usage: DummyApp params
ExitApp
}

To anyone coming from another programming language, the If statement should always be true, like "while 1" ... but not so!! :)

Renegade:
I liked this (Algol):


--- Code: C ---int a[3] = { 1, 2, 3 };int i = 1; void f(int j){    int k;    k = j;  // k = 2    i = 0;    k = j;  // k = 1 (!?!)    } int main(){    f(a[i]);}
At first glance, it looks hosed, but reading through starting at main() it makes perfect sense. My question then is... Sanity? Are you there? :P :D

Thanks for that link! Some very cool stuff in there.

f0dder:
Renegade: ugh, everything is passed by reference?

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